1) Aulic 2) Dignified 3) Elegant 4) Gallant 5) Regal 1) Befitting a royal court 2) Dignified 3) Elegant 4) Formal 5) Stately 
• (a.) Relating or belonging to a court. • (adv.) In the manner of courts; politely; gracefully; elegantly. • (a.) Elegant; polite; courtlike; flattering. • (a.) Disposed to favor the great; favoring the policy or party of the court; obsequious.
Court'ly adjective [ From Court .] 1. Relating or belonging to a court. 2. Elegant; polite; courtlike; flattering. « In courtly company or at my beads. Shak. » 3. Disposed to favor the great; favoring the policy or party of the court; obsequ...Court'ly adverb In the manner of courts; politely; gracefully; elegantly. « They can produce nothing so courtly writ. Dryden » 
[adj] - refined or imposing in manner or appearance
formal adjective refined or imposing in manner or appearance; befitting a royal court; `a courtly gentleman`